Note 8 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jul. 31, 2023		Jan. 31, 2023
Operating lease assets	$ 1,626	[1]	$ 1,749
Operating lease liabilities	1,626		1,749
Current liabilities	903	[1]	903
Non-current liabilities	723	[1]	846
Total Operating lease liabilities	$ 1,626		$ 1,749

[1] Reflects the condensed consolidated balance sheet as of July 31, 2023 and condensed consolidated statement of operations for the three and six months ended July 31, 2023 in the Form 10-Q.